摘要
采用Ti/AI/C/Diamond粉体为原料,通过自蔓延高温烧结(SHS)技术,制备了Ti_2AlC结合剂金刚石复合材料。研究了不同原料配比对烧结试样的物相组成与显微形貌的影响。采用X射线衍射(XRD)、扫描电镜(SEM)结合能谱仪(EDS)分析SHS试样。研究结果表明:2Ti/Al/C试样(含有质量分数为20%的金刚石)会发生自蔓延反应,生成Ti_2AlC,TiC与TiAl_3。金刚石与基体之间结合良好,在金刚石表而形成一个厚度约4μm的致密过渡层。在原料中继续添加过量Al,使SHS试样容易得到Ti_3AlC_2和TiAl等副产物,金刚石与基体结合良好。
Ti_2AlC ceramic boned diamond composites were fabricated by self-propagation high temperature sintering(SHS) from Ti/Al/C/Diamond powders.Effect of different raw materials ratio on phase composition and microstructure of SHS samples were studied.The samples were analyzed by XRD,SEM with EDS.The result show that the samples occur SHS reaction by ignited.TiAl phases were obtained by SHS from 2Ti/Al/C powders containing mass fraction 20%of diamond.Ti_2AlC,TiC and TiAl_3 phase were obtained.Meanwhile,the dense transient layer with a thickness of about 4 μm was formed on the face of diamond,making good combination between diamond and matrix.Adding excess Al enhances the synthesis of Ti_3AlC_2 and TiAl phase of the SHS samples.There was still good combination between diamond and matrix.
出处
《金刚石与磨料磨具工程》
CAS
2013年第6期26-29,共4页
Diamond & Abrasives Engineering
基金
河南省教育厅科学技术研究重点项目(13A430132)
